Remove unused copy

Variable path was copying the path but not using one of the copies.

gcc/rust/ChangeLog:

	* resolve/rust-ast-resolve-stmt.cc (ResolveStmt::visit): Remove
	unused copy.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Author: P-E-P

gcc/rust/resolve/rust-ast-resolve-stmt.cc

@@ -61,20 +61,19 @@ ResolveStmt::visit (AST::StaticItem &var)
 {
   auto decl = CanonicalPath::new_seg (var.get_node_id (),
 				      var.get_identifier ().as_string ());
-  auto path = decl;
   auto cpath = canonical_prefix.append (decl);
   mappings.insert_canonical_path (var.get_node_id (), cpath);
 
   resolver->get_name_scope ().insert (
-    path, var.get_node_id (), var.get_locus (), false, Rib::ItemType::Static,
+    decl, var.get_node_id (), var.get_locus (), false, Rib::ItemType::Static,
     [&] (const CanonicalPath &, NodeId, location_t locus) -> void {
       rich_location r (line_table, var.get_locus ());
       r.add_range (locus);
       redefined_error (r);
     });
 
   ResolveType::go (var.get_type ());
-  ResolveExpr::go (var.get_expr (), path, cpath);
+  ResolveExpr::go (var.get_expr (), decl, cpath);
 }
 
 } // namespace Resolver